Gurobi 5.6.3 (linux64) logging started Wed Oct  8 00:08:22 2014

Optimize a model with 24807 rows, 24806 columns and 74104 nonzeros
Presolve time: 0.55s
Presolved: 24807 rows, 24806 columns, 74104 nonzeros
Variable types: 0 continuous, 24806 integer (24806 binary)
Found heuristic solution: objective 18.6406410

Root relaxation: objective 1.227961e+01, 1951 iterations, 0.20 seconds

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

*    0     0               0      12.2796086   12.27961  0.00%     -    0s

Explored 0 nodes (1951 simplex iterations) in 0.81 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.227960864805e+01, best bound 1.227960864805e+01, gap 0.0%